public static string CalculateContractAddress(string address, BigInteger nonce)
{
var sha3 = new Sha3Keccack();
return
(sha3.CalculateHash(RLP.RLP.EncodeList(RLP.RLP.EncodeElement(address.HexToByteArray()),
RLP.RLP.EncodeElement(nonce.ToBytesForRLPEncoding()))).ToHex().Substring(24));
}
public static string CalculateContractAddress(string address, BigInteger nonce)
{
if (string.IsNullOrEmpty(address))
{
throw new System.ArgumentException($"'{nameof(address)}' cannot be null or empty.", nameof(address));
}
var sha3 = new Sha3Keccack();
return
sha3.CalculateHash(RLP.RLP.EncodeList(RLP.RLP.EncodeElement(address.HexToByteArray()),
RLP.RLP.EncodeElement(nonce.ToBytesForRLPEncoding()))).ToHex().Substring(24).ConvertToEthereumChecksumAddress();
}
public TransactionInput CreateSetTopScoreTransactionInput(string addressFrom, string addressOwner, string privateKey, BigInteger score, HexBigInteger gas = null, HexBigInteger valueAmount = null)
{
var numberBytes = new IntTypeEncoder().Encode(score);
var sha3 = new Nethereum.Util.Sha3Keccack();
var hash = sha3.CalculateHashFromHex(addressFrom, addressOwner, numberBytes.ToHex());
var signer = new MessageSigner();
var signature = signer.Sign(hash.HexToByteArray(), privateKey);
var ethEcdsa = MessageSigner.ExtractEcdsaSignature(signature);
var function = GetFunctionSetTopScore();
return(function.CreateTransactionInput(addressFrom, gas, valueAmount, score, ethEcdsa.V, ethEcdsa.R, ethEcdsa.S));
}
public TransactionInput closeRoomInput(string addressFrom, string privateKey, HexBigInteger gas, int id, HexBigInteger valueAmount = null)
{
var numberBytes = new IntTypeEncoder().Encode(id);
var sha3 = new Nethereum.Util.Sha3Keccack();
var hash = sha3.CalculateHashFromHex(addressFrom, numberBytes.ToHex());
var signer = new MessageSigner();
var signature = signer.Sign(hash.HexToByteArray(), privateKey);
var ethEcdsa = MessageSigner.ExtractEcdsaSignature(signature);
object[] array = new object[] { id };
var
function = closeRoomFunction();
return(function.CreateTransactionInput(addressFrom, gas, valueAmount, array));
}
public TransactionInput createUserInput(string addressFrom, string privateKey, HexBigInteger gas, string name, int pin)
{
var stringBytes = new StringTypeEncoder().Encode(name);
var numberBytes = new IntTypeEncoder().Encode(pin);
var sha3 = new Nethereum.Util.Sha3Keccack();
var hash = sha3.CalculateHashFromHex(addressFrom, numberBytes.ToHex(), stringBytes.ToHex());
var signer = new MessageSigner();
var signature = signer.Sign(hash.HexToByteArray(), privateKey);
var ethEcdsa = MessageSigner.ExtractEcdsaSignature(signature);
object[] array = new object[] { name, pin };
var
function = createUserFunction();
return(function.CreateTransactionInput(addressFrom, array));
}
public bool IsChecksumAddress(string address)
{
address = address.RemoveHexPrefix();
var addressHash = new Sha3Keccack().CalculateHash(address.ToLower());
for (var i = 0; i < 40; i++)
{
var value = int.Parse(addressHash[i].ToString(), NumberStyles.HexNumber);
// the nth letter should be uppercase if the nth digit of casemap is 1
if (value > 7 && address[i].ToString().ToUpper() != address[i].ToString() ||
value <= 7 && address[i].ToString().ToLower() != address[i].ToString())
{
return(false);
}
}
return(true);
}
public string ConvertToChecksumAddress(string address)
{
address = address.ToLower().RemoveHexPrefix();
var addressHash = new Sha3Keccack().CalculateHash(address);
var checksumAddress = "0x";
for (var i = 0; i < address.Length; i++)
{
if (int.Parse(addressHash[i].ToString(), NumberStyles.HexNumber) > 7)
{
checksumAddress += address[i].ToString().ToUpper();
}
else
{
checksumAddress += address[i];
}
}
return(checksumAddress);
}
public static string CalculateCreate2Address(string address, string saltHex, string byteCodeHex)
{
if (string.IsNullOrEmpty(address))
{
throw new System.ArgumentException($"'{nameof(address)}' cannot be null or empty.", nameof(address));
}
if (string.IsNullOrEmpty(saltHex))
{
throw new System.ArgumentException($"'{nameof(saltHex)}' cannot be null or empty.", nameof(saltHex));
}
if(saltHex.EnsureHexPrefix().Length != 66)
{
throw new System.ArgumentException($"'{nameof(saltHex)}' needs to be 32 bytes", nameof(saltHex));
}
var sha3 = new Sha3Keccack();
return sha3.CalculateHashFromHex("0xff", address, saltHex, sha3.CalculateHashFromHex(byteCodeHex)).Substring(24).ConvertToEthereumChecksumAddress();
}
public static string CalculateTransactionHash(string rawSignedTransaction)
{
var sha3 = new Sha3Keccack();
return(sha3.CalculateHashFromHex(rawSignedTransaction));
}
